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camera parameters from colmap have some problems #147

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lovejoker1102 opened this issue Oct 25, 2022 · 9 comments
Open

camera parameters from colmap have some problems #147

lovejoker1102 opened this issue Oct 25, 2022 · 9 comments

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@lovejoker1102
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Hi, I recently try to run colmap to get the camera parameters, but I found something confused. Colmap's input is DTU scans, when feature extraction I use PINHOLE camera model which is same as yours. However, after I converting the colmap output to mvsnet input by colmap2mvsnet.py, I have found the camera intrisic and extrinsic parameters are quite different from yours. Could you tell me how you run colmap (maybe some setting I have ignored?)

@hhl134
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hhl134 commented Jun 18, 2023

你好! 我也是遇到关于colmap生成参数有问题的情况 我将提供的测试集的图用colmap+colmap2mvsnet.py跑出来的结果与实际提供的差很多 当然生成的结果也不对 但不知道错在哪 请问大佬解决了吗

@lovejoker1102
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你好! 我也是遇到关于colmap生成参数有问题的情况 我将提供的测试集的图用colmap+colmap2mvsnet.py跑出来的结果与实际提供的差很多 当然生成的结果也不对 但不知道错在哪 请问大佬解决了吗

mvsnet的相机参数我记得是从ground truth转换过来的,colmap跑出来的精度没有那么高,所以结果要比原来差

@hhl134
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hhl134 commented Jun 20, 2023

大佬知道怎么转换吗 ground truth是指啥 标定得到的相机参数?

@lovejoker1102
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lovejoker1102 commented Jun 20, 2023 via email

@hhl134
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hhl134 commented Jun 20, 2023

现在我是想自己做测试集 他也提供了colmap2mvsnet.py 就大佬上面问的问题 想问下大佬解决了吗 就colmap生成出来的相机参数不能用的情况 我不管是用dtu还是tat哪个数据集来用colmap生成都不行 都不是他给的数据的效果

@lovejoker1102
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lovejoker1102 commented Jun 20, 2023 via email

@hhl134
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hhl134 commented Jun 20, 2023

两个都是有 首先就是相机的外参跑出来就差很多 对应的深度值就不对了 那生成出来的深度图 点云图肯定就不对了

@lovejoker1102
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lovejoker1102 commented Jun 22, 2023 via email

@Gaozihui
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Gaozihui commented Mar 5, 2024

@HaoyangHuang Hi, I also have this problem now and could you please provide more specific information on the different coordinates used from "相机参数差很多是因为坐标系选择不一样". Thanks a lot~

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